Alex Coleman said:
I can't work wout what else might be causing this. There is no
process running which I can see is the culprit.
Maybe I installed something and it changed the settings and then I
uninstalled it.
Do any of you specialists know where I might look and what settings
might be affected?
Well, I use a program called FrozenIcons on several machines which manages
the location of icons on my desktop and restores them when I change
resolutions. Previous versions had the unfortunate "feature" of not
allowing me to rename any icons on the desktop directly -- in effect
behaving exactly as you described. It's been corrected in the current
version.
I'm not suggesting that you're running this, but from what I could tell, the
program operated by "hooking" globally the stream of messages that the
Windows kernel distributes to running programs and squashing the ones it
wanted to block. Assuming that this is correct, a debugging tool like
Spy++, but I suspect that if you know how to use it you would have already
done so.
I think the first thing I'd do to find what's going on is to examine the
contents of the Startup folder for your son's account and see what it
contains that your Administrator account doesn't have. Then I'd use the
Process list in the Task Manager to see what's running for each user. If
you maximize its window, you usually can see the entire list and just use
Print Screen to get hard copies.
Norm